7. Significant history of cardiac disease, i.e., uncontrolled hypertension, unstable angina, uncompensated congestive heart failure, myocardial infarction within the past year, or cardiac ventricular arrhythmias requiring medication; patients with left ventricular ejection fraction (LVEF) below the institutional range of normal (50-70%) on a baseline multiple gated acquisition (MUGA) scan or echocardiogram.